Resilient tire



Patented Sept. 28, 1920.

M. A. GREENE.

RESILIENT TIRE. APPLICATION man 1uLv14.1919.

34a/vanto; M/. Smm/5 @Mew j o PATENT OFFICE.

MORGAN GREENE, OF RUPERT, IDAHO.

nEsILIENT TIRE.

- Application led .Tuly 14, 1919.

To all whom t 'may concer/n.

Be it known that I7 MORGAN A. GREENE, a citizen of the United States, residing at Rupert, in the county of Minidoka and State of Idaho, have invented certain new` and useful Improvements in Resilient Tires; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.Y p l This invention relates to resilient tires, and more specifically to an improved tire construction in which the resilient effect is obtained from a ring of solid and relatively stiff material, in contradistinction to the tires which are known as pneumatic, and in which the tread portion exerts a tensile stress on the rim-engaging portion, in contradistinction to the action of cushion7 tires.

One object of this invention is to generally improve upon devices'of this character by providing a structure which is strong. durable, highly resilient, and which can be manufactured at a comparatively low cost.

Other obj ects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawing in which:

Figure 1 is a cross sectional perspective view of a tire formed in accordance with the present invention and fitted on a radially flanged wheel-rim.

2 is a fragmental detail view illustrating the formation and mutual relation ofthe tread portions of the two primarily separate sections of the tire-casing.

3 is a fragmental detail View in vertical section, the section being taken substantially along the line 3 3 of Fig. 1.

Fig. 4 is a fragmental detail viewillus trating the application of artire stretching member or flanged ring between a bead of the casing and a flange of the rim.

Referring to these drawings in detail, in which similar characters correspond ywith similar parts throughout the several views, and in which the rim 5 may be of any appropriate construction, being preferably collapsible,-the invention comprises two primarily separate casing sections 6, an an-y nular filler member 7, a tread band 8 and an elastic annular member 9 constituting an inner ller and a pair of tire-bead clamps,

Specicatcnof Letters Patent.

Patented Sept. 28, 1920.

Serial No. 310,577.

each of the members 6 to 9 inclusive being of novel and improved construction.

Each of the tire casing sections 6 is formed with an annulus 10 which has a smaller' internal diameter than the adjoining inner surface of this section, and each annulus 10 is provided with a plurality of inwardly projecting ribs or ridges 11. Moreover, the tread portions 12 of the casing sections are depressed their inner edges, so that when these edges are brought together, as illustrated in Figs. 1 and 2, an annular channel 13 is formed between the tread portions 12. The tread band 8 is provided with an annular ridge or rib 14 which fits in the channel 13, and moreover, the tread band 8 is provided with inwardly projecting ridges 15 which extend laterally of the tread band and are fitted in corresponding grooves 1G -which are formed in the tread portions 12 and extend laterally thereof.

A relatively rigid, but somewhat yieldable and springy filler member 7 is formed with an annular groove or channel 17 into which each annulus 10 extends, and a plurality of lateral grooves 18 are formed in and extend acrossthe side walls of the annular groove 1T. These lateral grooves receive the ribs or ridges 11 of the tire casing sections, as clearly illustrated in Fig. 3.

The annular member 9 constitutes an inner filler and a pair of tire-bead clamps, as clearlyvillustrated in Fig. l, the peripheral element 19 of this member having laterally curved spring elements 2O extending in]- wardly from its edges and seated against the inner surface of the casing. Each element 2O has a springy flange 2l extending laterally and radially outward from its inner edge, and the elements 20 and 2l embrace and grip the beads 22 of the casing, thereby holding the inner portions of the tire in proper relation to one another and to the rim, while imparting to the lateral sides of the casing the desired curvature. The spring action of the elements 20 is ordinarily suflicient` to hold the beads 22 adjacent to the flanges of the rim 5, but where the tire is subjected to Yexceedingly heavy loads, an inflatable rubber tube 23 may be disposed within the annular cavity of this member 9. When this tube 23 is inflated,

`the elasticity of the air therein sup lements the'elasticity of the elements 20. f owever, other filling means may be employed for supplementing the elasticity lof A the' elements 20..

Although any appropriate material may be employed in constructing the members 6v to 9 inclusive, Vthe member 7 is here illustrated as being of tubular form, and when thus lconstructed, metal may constitute "the material thereof, and the annulus .9 may -be formed of springy metal. However, the inveiition is lnot limited to Vany .specific Imaterial or a hollow :iiller 7.,

The casing sections 6 are preferably formed .of combined rubber and fabric, so

l gagement ythatithey are sutiiciently elastic and tiexible to permit the annulus lO-ot each sectioiito be stretched ovcrtlie ridges 24 which constitute side walls of the annular groove 17,

Vand alter Vpassing over lthese ridges, the

annulus 10 of each section contracts by'its inherent elasticity so as tovhugor. grip the bottom of the groove 17. This `frictional contact of the annuli 10 and groove 17 tends to prevent creeping oi the tire sections with relation to the iiller 7, and the engagement of the ridges '11 with the lateral grooves 18 supplements this irictional engagement so as to efi'ectually prevent suoli creeping of parts with relation `to one another.` Simi-v employ cement for securing the tread band Aoit the inventive ideas as implied and in-place, `or the saine may be vulcanizedon the casing sections. Y

For the `purpose oit increasingl the tension of the curvedsides of the casing sections,v .when necessary or desirable, a tensioning ring 25 may be iittedbetween each flange of the rim 5 and the adjacent radial extension oic the element 21, and either oneor two of such rings 25 may beemployed.

Although l have described this embodiment of my invention specifically, it is not intended to limit the invention to these exact details oi' construction and arrangements, but changes may be made within thescope claimed.

Vhat l claim as my invention is- 1. In la tire, a casing comprising two Y primarily separate annular ysections each Jfor-ined with armi-engaging portion and a Y tread portion, each tread portion having an Y the;

' seated in said channel.

annulus extending radially inward therefrom, an annular filler member having an lluso-ic each or' said sections .being fitted in the annular groove of said iiller member while said ridges `are seated in said lateral grooves, and altread band co-aoting with said filler member to prevent displacement oetfsaid sections relative to one another.

3. In a tire, a casing comprising twoy primarily separate yannular sections each Pformed with a rim-engaging portion and a tread portion, each. tread portion ,having an annulus extending radially -inward -therefrom,an annular filler member having an annular groove in .which the annulus ofeach otsaid sections isseated, Yand a tread band secured on said tread portions and briding the joint between them. said Vtread band being tormedwith inwardly projecting laterally extending ridges, said ftread portions being formed lwith vlaterally extending grooves in which the ridges of said tread band are seated. y c Y In atire, a` casingccomprising two primarily Vseparate annular sections each formed with a rim-engaging portion and a tread portion,.each tread-portion having an annulus` extending .radially inwardV therefrom, anfannular iiller member having an annulargroove in .which the annulus of each ot `said sections is-seated, and a tread band secured on said tread portions and bridging the Vjoint between them, said tread band Y being formed with inwardly projecting laterally extending ridges, said tread portions being ormed with laterally extending grooves in which the ridges of said tread bandareA seated, said tread portions being formed .to providean annular channel where theyadjoin one another saidtread band being formed withan annular ridge which is j i :ln testimony whereof l have hereunto set myliandif ivioiaeau A.' GREENE, 

